1. REST IN BRAZIL
SERVICES AND ISSUESTO BE FOUGHT
Guilherme de Azevedo Silveira
Tuesday, May 14, 13

2. BRAZIL
• huge
• huge custom software development market
• huge software integration issues
• huge cobol, vb, delphi, java, c# legacy systems
• software development and educational revolution
Tuesday, May 14, 13

3. GUILHERME SILVEIRA
• Caelum CTO
• Software Development Education
• http://www.caelum.com.br
• http://www.casadocodigo.com.br
• guilherme.silveira@caelum.com.br
Tuesday, May 14, 13

4. GUILHERME SILVEIRA
• Applied Math (Discrete Dynamic Systems)
• REST (in practice)
• 고려사이버대학교 컴퓨터정보통신학과 (Cyber Korea University)
Tuesday, May 14, 13

5. AGENDA
• brazilian projects
• industry
• industry issues
• adoption issues
• educational issues
Tuesday, May 14, 13

6. ALEXANDRIA
• engineering.abril.com.br
• Abril Midia
• graphic
• distributor
• education
• CMS
• Luis Cipriani
Tuesday, May 14, 13

7. ALEXANDRIA: CONTENT
• 3 languages types
• 7 databases types
• 9 frameworks
• 207 machines
• 12.5 million pageview/month
Tuesday, May 14, 13

8. ALEXANDRIA:APPROACH
• Layered System
• Stateless
• Cache
• Code-on-demand
• ...
Tuesday, May 14, 13

9. ALEXANDRIA: CONCLUSIONS
• Long term needs
• Documentation need++
• Focus on protocol improvements later
Tuesday, May 14, 13

10. ALEXANDRIA
• REST:Advanced ResearchTopics and Practical
Applications, Springer
Tuesday, May 14, 13

11. CAELUM
• live learning
• enrollments, payments
• alumni
• job postings
Tuesday, May 14, 13

12. training
java + vraptor
one system
alumni.caelum.com.br
RoR
ondetrabalhar.com
ruby
mysql
mysql
solr
Tuesday, May 14, 13

13. CAELUM ONLINE
• online: learning environment
• training
• exercises
• videos
• explanations
• experience exchange
• payments
Tuesday, May 14, 13

14. training
java + vraptor
one system
alumni.caelum.com.br
RoR
ondetrabalhar.com
ruby
gnarus
scala + vraptor
casa do código
java + RoR
payments
java
metrics
java + octave
interestie
sinatra + sequel
sugest
java
promo
RoR
analyser 1
sinatra
analyser 2
java
exercises
RoR
badges
ruby + rails mountable engine
RoR + 6 projects
RoR
+ 1 ‘pages’
jsaws tickets
RoR
books
sinatra + sequel
mysql
mysql
mysql
mysql
mysql
redis
redis
solr
github
postgresql postgresql
postgresql
postgresql
postgresql
postgresql
Tuesday, May 14, 13

15. CAELUM ONLINE
• > 18 systems
• 4 language types
• 5 frameworks
• 5 database types
• < 20 developers
Tuesday, May 14, 13

16. training
java + vraptor
one system
alumni.caelum.com.br
RoR
ondetrabalhar.com
ruby
gnarus
java + vraptor
casa do código
java + RoR
payments
java
metrics
java + octave
interestie
sinatra + sequel
sugest
java
promo
RoR
analyser 1
sinatra
analyser 2
java
exercises
RoR
badges
ruby + rails mountable engine
RoR + 6 projects
RoR
+ 1 ‘pages’
jsaws tickets
RoR
books
sinatra + sequel
mysql
mysql
mysql
mysql
mysql
redis
redis
solr
github
postgresql postgresql
postgresql
postgresql
postgresql
postgresql
Tuesday, May 14, 13

17. WE STUDY
• advantages
• disadvantages
Tuesday, May 14, 13

18. WHAT ABOUT OTHERS?
• people
• companies
• projects
• schools
Tuesday, May 14, 13

19. DEVELOPERS
• know
• GET, POST
• html
• js
Tuesday, May 14, 13

20. DEVELOPERS
• know
• GET, POST
• html
• js
• no idea
• http
• hypermedia
Tuesday, May 14, 13

21. COMPANIES
• know
• GET, POST
• html
• js
Tuesday, May 14, 13

22. COMPANIES
• know
• GET, POST
• html
• js
• no idea
• http
• hypermedia
Tuesday, May 14, 13

23. SCHOOLS
• teach
• GET, POST
• html
• js
Tuesday, May 14, 13

24. SCHOOLS
• know
• GET, POST
• html
• js
• no idea
• http
• hypermedia
Tuesday, May 14, 13

25. companies
looking ahead
academia
the rest of the industry
Tuesday, May 14, 13

26. GAP
our
study
everyone’s
practice
Tuesday, May 14, 13

27. I FEEL LOST
as industry
Tuesday, May 14, 13

28. as a client
Tuesday, May 14, 13

29. AS A CLIENT, HOW DO I?
• service discovery
• in an android environment
• google intents; web intents
• on the web?
• web intents?
• richer? standards? good practices?
• “A Framework for Self-Descriptive RESTful
Services”
Tuesday, May 14, 13

30. as a client, i know my
providers
Tuesday, May 14, 13

31. # OF ACTIONS SUPPORTED?
• web intents scales on providers
• what about # of actions?
• “Distributed Affordance: an Open-world
Assumption for Hypermedia”
Tuesday, May 14, 13

32. as a company
Tuesday, May 14, 13

33. AN EXISTING SERVICE
• migration costs x no costs
• how do I publish my service?
• where do I publish my service?
• “A Concept for Generating Simplified RESTful
Interfaces”
Tuesday, May 14, 13

34. AS A NEW SERVICE
• design?
• json?
• rdf?
• “ModelYour Application Domain, NotYour JSON
Structures”
Tuesday, May 14, 13

35. as a hammer
Tuesday, May 14, 13

36. we see everything as
nails
Tuesday, May 14, 13

37. as a learning
environment
Tuesday, May 14, 13

38. we see the problem as
an human issue
Tuesday, May 14, 13

39. we see the problem as
an human issue
Tuesday, May 14, 13

40. we see the problem as an
human issue
•TDD
•test first
•+ other software engineering practices
•Mauricio Aniche’s research
•http://www.aniche.com.br/publications
Tuesday, May 14, 13

41. we see the problem as an
human issue
•developers
•solve problems with and withoutTDD
•analyze the solutions
Tuesday, May 14, 13

42. we see the problem as an
human issue
•“No difference betweenTDD and noTDD.”
•“Experience and wisdom makes the
difference.”
Tuesday, May 14, 13

43. we see the problem as an
human issue
•Lutz Prechelt
•An empirical comparison of C, C++, Java, Perl,
Python, Rexx, andTcl
•http://page.mi.fu-berlin.de/prechelt/Biblio/
jccpprt_computer2000.pdf
Tuesday, May 14, 13

44. we see the problem as an
human issue
•developers
•solve a problem in different languages
Tuesday, May 14, 13

45. we see the problem as an
human issue
•“the differences between languages tend to be
smaller than the typical differences due to
different programmers within the same
language”
Tuesday, May 14, 13

46. as a learning
environment
Tuesday, May 14, 13

47. we see the problem as
an educational issue
Tuesday, May 14, 13

48. we see the problem as
an educational issue
Tuesday, May 14, 13

49. SERVICE PRODUCTION CHAIN
school
graduation
industry
academia
we see the problem as an
educational issue
Tuesday, May 14, 13

50. academia & industry
•try to bring every company and developer
closer to research ?
•if not researching, trying in practice and
analyzing its results?
Tuesday, May 14, 13

51. question:
how can we make
others think about
REST?
Tuesday, May 14, 13

52. how can we make others think about REST?
Guilherme Silveira
guilherme.silveira@caelum.com.br
THANKYOU
Tuesday, May 14, 13